SN74AHC574DWR

Flip Flops Overview

The SN74AHC574DWR is an octal edge-triggered D-type flip-flop manufactured by Texas Instruments, belonging to the 74AHC logic series. It features eight independent D-type flip-flops with three-state outputs in a 20-SOIC package. The device operates on a supply voltage ranging from 2V to 5.5V. Key electrical parameters include a maximum propagation delay of 10.6ns at 5V with 50pF load, a clock frequency of 115MHz, and output drive currents of 8mA for both high and low states. It supports a wide operating temperature range from -40°C to 85°C.

Flip Flops Feature Summary

• Octal configuration providing eight independent D-type flip-flops within a single integrated circuit.
• Three-state outputs allow direct connection to bus-oriented systems without external drivers.
• Edge-triggered operation ensures data capture occurs specifically at the positive transition of the clock signal.
• Wide power supply compatibility supports operation across standard 2V to 5.5V ranges.

Flip Flops Applications

• Bus-oriented memory register implementations
• 8-bit cache memory units
• Parallel-to-serial data conversion circuits

Flip Flops Procurement Notes

Verify the component authenticity by checking the manufacturer part number against official Texas Instruments documentation. Confirm the package type matches the required 20-SOIC footprint and ensure the suffix corresponds to the tape and reel packaging format specified for automated assembly processes. Cross-reference the RoHS compliance status with current environmental regulations.

Flip Flops Selection Notes

Select this component when designing systems requiring octal storage with three-state bus interfacing capabilities. The AHC series offers superior speed compared to standard HC logic while maintaining CMOS low-power characteristics. Ensure the design accommodates the 2V to 5.5V supply range and verify that the 10.6ns propagation delay meets the system timing requirements.

Flip Flops Part Context

This device is part of the broader 74AHC574 family, which includes variants with different packaging options such as DGVR. It serves as a fundamental building block for digital logic designs requiring parallel data latching. The SOIC package provides a surface-mount solution suitable for modern PCB layouts, distinguishing it from through-hole alternatives like the PDIP variant.

Flip Flops Replacement Considerations

SN74AHCT574DWR

Flip Flops FAQ

What is the specific trigger mechanism for data input?

The device utilizes positive-edge triggering, meaning data is captured at the rising edge of the clock signal.

How does the three-state output function?

The outputs can be placed in a high-impedance state via the output control input, allowing them to be disconnected from the bus.